UmbracoExamine ParentID?

I'm currently using UmbracoExamine for all of my project's search needs, and I'm trying to figure out what exactly the query-parameter ".ParentId" does.

I was hoping I could use it to find all child nodes from a parentID, but I can't seem to get it working.

Basically, if the searchstring contains e.g. "C# Programming", it should find all that category's articles. This is just an example.

Thank you in advance!

Solution

When you say it should find all "that category's" articles I assume you have a structure like the below?

-- Programming
----Begin Java Programming
----Java Installation on Linux
----Basics of C# Programming
----What is SDLC
----Advanced C# Programming
-- Sports
----Baseball basics

If so then I assume as well that you want all the articles under "programming" to be listed and not just those containing "C# Programming"?

What you will need to do is to loop through the SearchResults from your query and find the parent node from there

IPublishedContent node = new UmbracoHelper(UmbracoContext.Current).TypedContent(item.Fields["id"].ToString());
IPublishedContent parentNode = node.Parent;

Once you have the parent node you can get all it's children as well as some of them depending on document type and what you want to do

IEnumerable<IPublishedContent> allChildren = parentNode.Children;
IEnumerable<IPublishedContent> specificChildren = parentNode.Children.Where(x => x.DocumentTypeAlias.Equals("aliasOfSomeDocType"));

Example code below

    //Fetching what eva searchterm some bloke is throwin' our way
    string q = Request.QueryString["search"].Trim();

    //Fetching our SearchProvider by giving it the name of our searchprovider
    Examine.Providers.BaseSearchProvider Searcher = Examine.ExamineManager.Instance.SearchProviderCollection["SiteSearchSearcher"];

    // control what fields are used for searching and the relevance
    var searchCriteria = Searcher.CreateSearchCriteria(Examine.SearchCriteria.BooleanOperation.Or);
    var query = searchCriteria.GroupedOr(new string[] { "nodeName", "introductionTitle", "paragraphOne", "leftContent", "..."}, q.Fuzzy()).Compile();        

    //Searching and ordering the result by score, and we only want to get the results that has a minimum of 0.05(scale is up to 1.)
    IEnumerable<SearchResult> searchResults = Searcher.Search(query).OrderByDescending(x => x.Score).TakeWhile(x => x.Score > 0.05f);  

    //Printing the results
    foreach (SearchResult item in searchResults)
    {
        //get the parent node
        IPublishedContent node = new UmbracoHelper(UmbracoContext.Current).TypedContent(item.Fields["id"].ToString());
        IPublishedContent parentNode = node.Parent;

        //if you wish to check for a particular document type you can include this
        if (item.Fields["nodeTypeAlias"] == "SubPage")
        {

        }
    }